ATLANTA--(BUSINESS WIRE)--A report published in the journal Optometry & Vision Science demonstrated that patients who replaced their silicone hydrogel (SH) contact lenses according to the manufacturer recommended replacement frequency (MRRF) experienced better comfort and vision at the end of the day than non-compliant patients. i The analysis was part of a larger study sponsored by CIBA VISION, which was developed to investigate contact lens replacement schedule compliance.